Research: Usability of rate / review forms?

Hi all --
Can anyone point me to research about the design of "Rate this service /
Rate this product" types of systems or forms?

Searching for the keywords is proving to be impossibly broad since the terms
aren't very specific, and I'm not sure how to best narrow down the search.

I'm just trying to get a baseline understanding of how well different
approaches work best; should free-text responses be at the beginning or the
end of the form vs. objective ones; etc.

Cheers,
Ellen